| 稀土对红壤微生物量影响的初步研究 |
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| 引用本文： | 杨元根,袁可能,何振立.稀土对红壤微生物量影响的初步研究[J].地球与环境,1999(1). |
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| 作者姓名： | 杨元根 袁可能 何振立 |
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| 作者单位： | 中科院地球化学研究所!贵阳，550002，浙江农业大学土化系，杭州，310029，浙江农业大学土化系!杭州，310029，浙江农业大学土化系!杭州，310029 |
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| 摘 要： | 本文研究了不同稀土元素在不同浓度水平下红壤（黄筋泥）中微生物量的变化规律。结果表明，不同稀土元素对土壤微生物量具有相似的影响效应：在低稀土浓度条件下土壤微生物量升高，随稀土浓度的升高土壤微生物量显著降低。但不同稀土元素使微生物量降低的程度各异，并初步求得黄筋泥中稀土元素对微生物的毒性浓度可能在（90～180）×10(－6)范围内。
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| 关 键 词： | 稀土元素 微生物量 |
A PRIMARY STUDY ON THE INFLUENCE OF RAREEARTH ELEMENTS (REE) ON RED SOIL MICROBIAL BIOMASS |
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| Yang Yuangen , Yuan Keneng, He Zhenli.A PRIMARY STUDY ON THE INFLUENCE OF RAREEARTH ELEMENTS (REE) ON RED SOIL MICROBIAL BIOMASS[J].Earth and Environment,1999(1). |
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| Authors: | Yang Yuangen Yuan Keneng He Zhenli |
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| Abstract: | Changes in red soil microbial biomass under different REE concentrations have been studied. Theresults show that there exist similar effects of the REE on red soil microbial biomass: soil microbialbiomass increases at lower REE concentrations, but decreases rapidly with increasing REE concentra-tions. However, this trend of decreasing depends on different REE. It could be concluded that thetoxic concentrations of REE toward red soil microbe may be within the range of (90 - 180) ×10-6. |
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| Keywords: | rare-earth elements soil microbial biomass |
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